Síndrome floral, recursos e guilda de polinizadores: um estudo de caso em Heliconia psittacorum L. f. (Heliconiaceae)
Palavras-chave:
comportamento do beija-fl or, energia do néctar, HesperiidaeResumo
Recursos fl orais podem afetar a guilda, a frequência e o comportamento dos visitantes. Este estudo comparou a guilda de polinizadores e a energia do néctar de Heliconia psittacorum L. f. (Heliconiaceae), no pico e no fi nal do período da fl oração em um fragmento de Floresta Atlântica, Nordeste do Brasil. A produção de néctar e a disponibilidade de calorias foram maiores no início da manhã, coincidindo com a maioria das atividades dos visitantes fl orais. A disponibilidade de calorias afetou a guilda de polinizadores. No pico da fl oração, foram registrados os beija-fl ores Amazila leucogaster Gmelin (territorialista) e Phaethornis ruber Linnaeus (trapliner), a borboleta Talides sp. (Hesperiidae) e a abelha Exaerete smaragdina Guérin-Méneville. No fi nal do período de fl oração, Talides sp. e os beija-fl ores P. ruber e P. pretei Lesson & DeLattre foram registrados. Heliconia psittacorum é um recurso importante na área e a síndrome de polinização não previu alguns dos polinizadores observados.
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